Across
- 1. beta particle
- 3. gamma ray
- 6. mass number
- 8. ion
- 12. alpha particle
- 13. cation
- 16. beta radiation
- 18. anion
- 19. isotope
- 20. hydrate
Down
- 2. percent by mass
- 4. anhydrate
- 5. atomic mass unit
- 7. nuclear equation
- 9. neutron
- 10. percent compisition
- 11. alpha radiation
- 14. nucleus
- 15. proton
- 17. molar mass